An indictment was unsealed Friday charging a former Shelby County Sheriff's deputy with trying to have a witness killed.

Jeremy Drewery, 42, of Arlington, was already charged with extorting an alleged drug dealer in a church parking lot in Cordova last year and with unlawfully taking money from a person in 2013.

"The Shelby County Sheriff’s Office has since received information that Drewery solicited a person to kill one of the witnesses in the earlier indictment and notified the FBI," the U.S. Attorney's Office said in a news release and declined to release further details.

Drewery is charged under a federal law dealing with solicitation to commit a crime of violence. The indictment was filed under seal Wednesday.

"No one can comment on an active investigation," Shelby County Sheriff's spokesman Earle Farrell said when asked about the case.

Drewery's lawyer, Steve Farese, said a detention hearing will be held Tuesday and declined further comment.

The Tarnished Badge Task Force investigated Drewery who was part of the Shelby County Sheriff's Narcotics Task Force. He was terminated last year after an administrative hearing.

A federal complaint unsealed in September alleges Drewery threatened a victim with arrest unless he was paid after a search warrant August 3 at the person's home. Oxycontin, Xanax and about 1,400 grams of marijuana was seized and the victim reported being arrested and taken to the Shelby County Sheriff's Narcotics Division in an black, four-door GMC pickup.

FBI Special Agent Anthony Householder said in court documents that the deputy offered the person freedom in exchange for $15,000 in cash. According to an affidavit, the deputy texted at one point when he could not reach the victim: "You will have a warrant out for your arrest on Monday!"

The documents say the person gave Drewery thousands of dollars in FBI funds on multiple occasions, including $2,000 on Aug. 13 in a parking lot at Bellevue Baptist Church in Cordova.

A superseding indictment filed in March charged Drewery with additional wrongdoing – one count of extortion and one count of theft by a government agent – between Oct. 29, 2013 and Dec. 31, 2013 involving "a matter worth more than $5,000" and the "actual or threatened" use of fear, force and violence.